XR88C92IV-F Equivalent & Substitute Parts

Part Overview

The XR88C92IV-F is a dual UART FIFO interface IC manufactured by MaxLinear, Inc., housed in a 44-LQFP package. This component provides two DUART channels with 8-byte FIFO buffers, configurable GPIO, internal oscillator, and timer/counter functionality. The part is classified as obsolete, making equivalent substitute components necessary for ongoing system support and new design implementations.

Substiute Parts

XR88C92IV-F

MaxLinear, Inc.In Stock: 3732XR88C92IV-F Datasheet

Current PartRFQ

TL28L92FR

Texas InstrumentsIn Stock: 823TL28L92FR Datasheet

MFR RecommendedRFQ

TL28L92IFR

Texas InstrumentsIn Stock: 65808TL28L92IFR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the XR88C92IV-F are qualified based on the following electrical and mechanical parameters:

• Channel Configuration: Dual DUART (2 channels) architecture
• Package Compatibility: 44-pin QFP/LQFP form factor (10x10mm footprint)
• Mounting Type: Surface mount technology
• Core Functionality: UART receiver/transmitter with FIFO buffering, configurable GPIO, internal oscillator, and timer/counter
• Voltage Supply Range: Compatible supply voltage operation
• Moisture Sensitivity: MSL 3 classification

The substitute parts TL28L92FR and TL28L92IFR, both manufactured by Texas Instruments, meet these substitution criteria. Both are active products with dual DUART channels in 44-QFP packages, providing enhanced specifications including larger FIFO buffers (16 Byte), higher data rates (1 Mbps), and additional features such as false start bit detection and modem control.

Parameter Comparison

Engineering Selection Recommendations

Both TL28L92FR and TL28L92IFR are active products from Texas Instruments and represent direct functional substitutes for the obsolete XR88C92IV-F. Selection between these two Texas Instruments alternatives should be based on inventory availability and packaging requirements.

TL28L92IFR offers significantly higher inventory availability (65,780 Pcs) compared to TL28L92FR (716 Pcs), making it the preferred choice for volume applications and long-term supply chain stability. Both parts are ROHS3 compliant and REACH unaffected, meeting modern environmental and regulatory requirements.

The substitute parts provide enhanced performance specifications, including doubled FIFO capacity (16 Byte vs. 8 Byte) and higher maximum data rates (1 Mbps vs. 230.4 kbps), while maintaining mechanical and electrical compatibility through identical 44-pin QFP package geometry and dual DUART channel architecture.

Frequently Asked Questions (FAQ)

Q: Can TL28L92FR and TL28L92IFR be used interchangeably with XR88C92IV-F?

A: Yes. Both Texas Instruments parts are functionally equivalent substitutes. They share identical dual DUART channel architecture, 44-pin QFP package footprint (10x10mm), surface mount configuration, and MSL 3 moisture sensitivity rating. The primary differences are enhanced FIFO capacity and data rate specifications in the substitute parts.

Q: What is the difference between TL28L92FR and TL28L92IFR?

A: Both parts are identical in electrical specifications and package configuration. The primary distinction is packaging format (Tray for both) and inventory availability. TL28L92IFR has substantially higher stock levels, making it more suitable for production applications requiring supply chain continuity.

Q: Are the substitute parts pin-compatible with XR88C92IV-F?

A: Both substitute parts use 44-pin QFP packages with 10x10mm footprints, matching the XR88C92IV-F 44-LQFP package. Pin compatibility should be verified against specific application schematics and PCB layouts, as LQFP and QFP variants may have minor dimensional differences.

Q: Do the substitute parts support the same voltage supply range?

A: The XR88C92IV-F operates at 2.97V ~ 5.5V, while TL28L92FR and TL28L92IFR operate at 3.3V and 5V. Applications requiring operation below 3.3V may require circuit redesign or alternative component selection.

Q: What compliance certifications apply to the substitute parts?

A: Both TL28L92FR and TL28L92IFR are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory standards for electronic components.